ŞAHİN, R.V. and COŞGE ŞENKAL , B. 2024. Determination of Antioxidant Activities of Echinacea purpurea (L.) Moench. Plant Extracts Harvested at Different Times. ISPEC Journal of Agricultural Sciences. 8, 4 (Dec. 2024), 926–937. DOI:https://doi.org/10.5281/zenodo.13352969.